iio: adc: adrv9025: add full path for include directories

Some build systems like yocto might not build the kernel on the kernel
top directory. In that case the include paths won't be found and the
build fails (petalinux is an example of this). So, we now add the full
path making sure things are reachable.

Similar with what was done for example for adrv9002.

Signed-off-by: Nuno Sa <[email protected]>

Author: nunojsa

drivers/iio/adc/madura/Makefile

@@ -45,14 +45,14 @@ SRCS = 	devices/adrv9025/private/src/adrv9025_bf_analog_orx_mem_map.c \
 # Avoid FP operations and data sytpes - Remove DPD *_dfe.c files
 #SRCS := $(filter-out /devices/adrv9025/private/src/adrv9025_dfe.c /devices/adrv9025/public/src/adi_adrv9025_dfe.c, $(SRCS))
 
-ccflags-y += -I$(src)/devices/adrv9025/private/include/ \
-	-I$(src)/devices/adrv9025/public/include/  \
-	-I$(src)/common/ \
-	-I$(src)/common/adi_hal/  \
-	-I$(src)/common/adi_error/  \
-	-I$(src)/common/adi_libc/  \
-	-I$(src)/common/adi_logging/  \
-	-I$(src)/platforms/ \
+ccflags-y += -I$(srctree)/$(src)/devices/adrv9025/private/include/ \
+	-I$(srctree)/$(src)/devices/adrv9025/public/include/  \
+	-I$(srctree)/$(src)/common/ \
+	-I$(srctree)/$(src)/common/adi_hal/  \
+	-I$(srctree)/$(src)/common/adi_error/  \
+	-I$(srctree)/$(src)/common/adi_libc/  \
+	-I$(srctree)/$(src)/common/adi_logging/  \
+	-I$(srctree)/$(src)/platforms/ \
 	-DADRV9025_CHANNELID_CHECK=0 \
 	-DADI_COMMON_VERBOSE=1 \
 	-DADI_ADRV9025_RADIOCTRL_RANGE_CHECK=1 \